Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6354d27bb84e9bb…

MALICIOUS

PDF

47.7 KB Created: 2020-08-03 06:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b78e3794485e1f362ab698e5900d984c SHA-1: dd9765e488ebc680b041cfd22367a2fef1aa03d8 SHA-256: e6354d27bb84e9bb221ce38d3510c0f4317a009b12966713671efdd48dd06194
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains a mass external link farm, with a primary link pointing to a malicious redirector. This redirector likely serves as a lure to trick users into installing a browser extension or update, a common social-engineering tactic. The document body, though heavily obfuscated, contains the malicious URL. No scripts were extracted from this sample.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=htaccess+cache-+control
    • http://files.techterryscholars.org/uploads/1/3/0/9/130969097/3541724.pdf
    • http://files.provisopartners.com/uploads/1/3/1/3/131379049/5947758.pdf
    • http://giwes.mistyoaks45.org/uploads/1/3/1/6/131636855/sapepuposovimikaro.pdf
    • http://files.jimblackburninfo.com/uploads/1/3/1/0/131071249/galewadur_xisetananixulub_kutodixupovapaw.pdf
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/33824275828.pdf
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/kezegoxemizinonizo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5181/7883/files/re5r05a_overhaul.pdf
    • https://cdn.shopify.com/s/files/1/0434/4755/0119/files/tecumseh_carb_adjustments.pdf
    • https://cdn.shopify.com/s/files/1/0432/5261/3277/files/steam_fatal_error.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/wojewemujebobotezeruji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/wuboguwipujosimavekelakir.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/97589159167.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/53934923564.pdf
    • https://cdn.shopify.com/s/files/1/0434/1537/1932/files/git_hub_commands.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/11724780939.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007744.bin
06ea33c83bf051697a6901d2d496b84f7f0d53b314c41d58ff7b745bd35db751
pdf-font-stream PDF embedded font (sfnt) at offset 0x7744 4880 bytes
font_01_sfnt_off000087d4.bin
f4c46d5dc8dd7abf05aa7c3a8be9213c842fb9c92fffc98ead9757a910b9b3a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x87D4 12780 bytes